Pith Number

pith:XPPHXYZR

pith:2018:XPPHXYZR4RBKZPKQMC4B754NT2

not attested not anchored not stored refs pending

DocFace: Matching ID Document Photos to Selfies

Anil K. Jain, Yichun Shi

arxiv:1805.02283 v1 · 2018-05-06 · cs.CV

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XPPHXYZR4RBKZPKQMC4B754NT2}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:16:40.309294Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bbde7be331e442acbd5060b81ff78d9ebea0505c868e395a5fee712106cf2214

Aliases

arxiv: 1805.02283 · arxiv_version: 1805.02283v1 · doi: 10.48550/arxiv.1805.02283 · pith_short_12: XPPHXYZR4RBK · pith_short_16: XPPHXYZR4RBKZPKQ · pith_short_8: XPPHXYZR

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/XPPHXYZR4RBKZPKQMC4B754NT2 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: bbde7be331e442acbd5060b81ff78d9ebea0505c868e395a5fee712106cf2214

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aaa9f1f395012cf4c727804bcce91799b05c9b4146349079de33ffd85fa78c4a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-05-06T22:17:35Z",
    "title_canon_sha256": "bf195d0b524b91bbee92e6274214ac7d3159e31db5044cf730674968118f6c77"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.02283",
    "kind": "arxiv",
    "version": 1
  }
}